<!DOCTYPE html>
<html>
<head >
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
    <form action="/do/s/savefile" method="post" enctype="multipart/form-data">
        <input name="file" type="file" >
        <button type="submit">提交</button>
    </form>
</body>
</html>